How to avoid oscillation in hover

The following test/experiment page has a drop shadow in CSS that also
uses the hover selection to modify the apparent height perception the
drop shadow is doing. The problem is the top-right and bottom-left
corners have a few spots which the pointer is there, causes the effect
to oscillate. Because the shadow effect is moving a relative position,
when the pointer is in a position that would hover, but hover causes
the position to change so that it is no longer hovering over, it will
move back and forth, oscillating.

http://phil.ipal.org/usenet/ciwas/20...in-tables.html

Any ideas on how to stop this effect?

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Phil Howard KA9WGN | http://linuxhomepage.com/ http://ham.org/ |
(first name) at ipal.net | http://phil.ipal.org/ http://ka9wgn.ham.org/ |
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